Butt-hinge



(No Model.)

R. T. SMITH.

BUTT HINGE.

No. 477,465. Patented June 21, 1892.

UNITED STATES PATENT OFFICE.

ROS'WELL T. SMITH, OF NASHUA, NEIV HAMPSHIRE.

BUTT-HINGE.,

SPECIFICATION forming part of Letters Patent No. 477,465, dated JF une A21, 1892. Application filed February 29, 1892. Serial No. l123,250. (No model.)

' hinge wherein the halves are formed of sheet or plate 'metal by cutting and shaping the sheet metal so as to form the pintleeyes and t-hen folding the metal away from vthe eyes, one part upon the other; and my invention consists in a hinge having one of the folded portions'of each of its halves formed with a countersink and a hole or holes for the reception of the fastening screw or screws, and said portion formed with a hollow spur or spurs of homogeneous metal extended into an aperture or apertures of the other portion, and said portions solidly united by the said spur or spurs, which spur or spurs, when riveted, presenting a smooth flat surface or surfaces on the half through which it or they pass, as will be hereinafter described and claimed.

In the accompanying drawings, Figure lis a face View of a butt-hinge made in accordance with my invention. Fig. 2 is a horizontal section of the hinge shown in Fig. l. Fig. 3 is a horizontal section on an enlarged scale of onehalf of the hinge, showing the lower folding portion of the metal of which it is formed, as it is perforated preparatory to folding it, to permit the punching of the screw-hole, forming a countersink and riveting-spur' or to admit of the passage through 'it of a riveting-spur formed on the upper folded portion previously to folding the metal. Fig. et is a similar section to Fig. 3 with the upper portion in position and condition for the riveting operation; and Fig. 5 is a section similar to Fig. t, showing the riveting com pleted, asin Fig. 2.

A A in the drawings designate two halves of a butt-hinge, each being formed of a single piece of sheet or plate metal by punching and folding the metal and shaping it with pintle eyes a a after a well-known method. In the sheet of metal thus punched and preparatory to shaping it with the pintle-eye portion and also preparatory to folding one portion upon the other, a vround aperture c is cut through the under foldingportion b', and, if preferred, the countersunk screwhole and riveting-spur may be formed before folding the upper portion upon the under portion, as will be hereinafter more fully explained. If simply the aperture c is cut or punched preparatory to shaping and folding, the sheet is next shaped to form the pintle-eyes and the upper folded portion folded upon the lower portion, and thereupon the upper portion is subjected to the action of a cutting-punch at a point din rectly in line with the round aperture c, said punch being adapted for forming a cylindrical screw-hole f and a eountersink f', and also displacing the metal at the point where the screw-hole and eountersink are formed, and forcing it in the form of a cylindrical hollow spur f2 through said hole c in the lower portion of the metal, and thereafter by means of this spur the parts are securely riveted together, the lower end of the spur, when the riveting is completed, lying flush with the surface of the under side of the hinge half The lower edge of the round hole, being slightly flared in the operation of punching it, admits of the rivet edge being so depressed into the body of the metal as not to present an extending projection beyond the surface of the hinge. If preferred, the countersink may be formed by a separate punch after the screw-hole is punched. The respective halves of the hinge are made alike, except one-half has a plurality of the pintleeye portions and the other a single eye portion. This, however, may be in accordance with any known modes of hinging the parts together. If preferred, the hingexalvos may be riveted at any time after the punchingand countersinking are performed, but generally the opera tion will be a continuous one. It will be unn derstood that when a series of holes are used the construction of all of the holes will be the same as herein described.

By my invention I am enabled to furnish the trade with folded or doubled plate,wrought, or malleable iron hinges, which are very strong, and the folded portions thereof firmly IOO riveted together by rivets, which are of homogeneous metal and in line with the holes through which the fastening-screws pass, and the said hinges present a nice finish and are cheaply manufactured.

lhat I claim as my invention is- A hinge having each of its halves formed of folded or doubled metal, one of the folded portions being provided With a countersunk hole for the reception of a fastening-screw and with a homogeneous riveting-spur and 

